The temperature on August 14, 1909 was between 7.6 °C and 18.7 °C and averaged 15.0 °C. There was 1.9 hours of sunshine (13%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
January 25 » Richard Strauss's opera Elektra receives its debut performance at the Dresden State Opera.
February 20 » Publication of the Futurist Manifesto in the French journal Le Figaro.
February 22 » The sixteen battleships of the Great White Fleet, led by USSConnecticut, return to the United States after a voyage around the world.
August 28 » A group of mid-level Greek Army officers launches the Goudi coup, seeking wide-ranging reforms.
September 7 » Eugène Lefebvre crashes a new French-built Wright biplane during a test flight at Juvisy, south of Paris, becoming the first aviator in the world to lose his life in a powered heavier-than-air craft.
October 16 » William Howard Taft and Porfirio Díaz hold the first summit between a U.S. and a Mexican president. They narrowly escape assassination.
Day of marriage April 1, 1936
The temperature on April 1, 1936 was between 8.0 °C and 13.7 °C and averaged 11.0 °C. There was 11.3 mm of rain during 5.4 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
March 16 » Warmer-than-normal temperatures rapidly melt snow and ice on the upper Allegheny and Monongahela rivers, leading to a major flood in Pittsburgh.
September 6 » Spanish Civil War: The Interprovincial Council of Asturias and León is established.
September 9 » The crews of Portuguese Navy frigate NRPAfonso de Albuquerque and destroyer Dão mutinied against the Salazar dictatorship's support of General Franco's coup and declared their solidarity with the Spanish Republic.
November 2 » The British Broadcasting Corporation initiates the BBC Television Service, the world's first regular, "high-definition" (then defined as at least 200 lines) service. Renamed BBC1 in 1964, the channel still runs to this day.
November 30 » In London, the Crystal Palace is destroyed by fire.
December 11 » Abdication Crisis: Edward VIII's abdication as King of the United Kingdom and the British Dominions beyond the Seas, and Emperor of India, becomes effective.
Day of death November 21, 1986
The temperature on November 21, 1986 was between 3.3 °C and 7.0 °C and averaged 5.8 °C. There was 2.2 mm of rain during 1.2 hours. There was -0.1 hours of sunshine (0%). The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 13 » A month-long violent struggle begins in Aden, South Yemen between supporters of Ali Nasir Muhammad and Abdul Fattah Ismail, resulting in thousands of casualties.
January 28 » Space Shuttle program: STS-51-L mission: Space Shuttle Challenger disintegrates after liftoff, killing all seven astronauts on board.
April 11 » FBI Miami Shootout: A gun battle in broad daylight in Dade County, Florida between two bank/armored car robbers and pursuing FBI agents. During the firefight, FBI agents Jerry L. Dove and Benjamin P. Grogan were killed, while five other agents were wounded. As a result, the popular .40 S&W cartridge was developed.
June 22 » The famous Hand of God goal, scored by Diego Maradona in the quarter-finals of the 1986 FIFA World Cup match between Argentina and England, ignites controversy. This was later followed by the Goal of the Century. Argentina wins 2–1 and later goes on to win the World Cup.
September 7 » Desmond Tutu becomes the first black man to lead the Anglican Diocese of Cape Town.
October 21 » In Lebanon, pro-Iran kidnappers claim to have abducted American writer Edward Tracy (he is released in August 1991).
When copying data from this family tree, please include a reference to the origin: Elly Gelderman, "Family tree Gelderman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gelderman/I12847.php : accessed March 6, 2026), "Hendrika van der Werf (1909-1986)".
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